Centrifugal extractor



Nov. 18, 1930. F. RGDL' R 1,782,119

CENTRIFUGAL B'xTRAcToR Filed Nov. 2, 1927 INVENTOR BY 2 A TTORNE Y.

Patented-NQvQIS'JQEO 1 1,782,119

involved, reference is herebyinadeto Patent cated at 8 with anadjustment nut 9 engag 35 ratus, more unlikely; It isfurther my objectSurrounding thebowl and cover isa' cas 7 o fines, 4 v I r v ingstructures with flat bottoms as in this UNITED T T S: PATENTgoFFIcE l li 1 3mnonnnnior" cincInnA'ri; on o I ionnrniruennnir'rnieoron I A-seametastases 2, 19: 27. Serial No. 230309.

My invention relates to centrifugal'ex trac- On a suitable base 1 I haveshown a bracket tors, and particularly 'to' laboratory appag 2 .withinwhich is journaled a handle 3, with ratus fOI" extracting anddetermining the. which the apparatus is' turned. Within the percentageof thesoluble Constituents of road rcasingwt have provideda wormj5 onthe5 material; I r i Shaft 5 and a wormi gear 3" Inountedon a; 55

In the art, centrifugal machines for ex shaft? connected withthe handle3 by which, tracting the soluble constituents of-matte'r to v rotarymovement is imparted to the shaftfi; be tested are old andwellknown',and the On the shaft 5 I have mounted a sleeve 6 principle of operationof my device is not and the said sleeve is held down'on apin .11 p

new. As an example of the general arrange-q in theshaft by the nut- 7The upper end of '60 ment of parts and the mechanical principle fthesleeve is externally threaded as indi;.

' #1,105,954. In: suchapparatusi'there"isa1:ing thelthre'ads 8. The bowl10 is pressed rotatable bowl into which the material to be on the lowerend of the sleeve 6which causes tested is poured. Afilter paper ofannular themto rotate as a single unit. 'The lower 65 shape is disposedon the top wall of the bowl, end of the sleeve has a slot 10 which enanda cover or lid is clamped downf on'the gages the pin 11 extending fromthe shaft 5 filter paper. The filtrate is thrown through whiclrpreventsthe sleeve and bowl from the filter paper lengthwise of thefiber-be-Isliding down beyond a fixed point. This tween the bowl and cover.1 Anouter recepmakes it possible to remove the bowl and 70" tacle enclosesthe rotatable" bowl and fthe sleeve assembly in order to Weighit.

filtrate striking the inner wallsof the recepf An annular filter paper'12 is disposed on tacle runs down to the bottonn from which the topwall of the bowl and the cover memit discharges into a vessel. It iscustomary her 13 may be tightened down, clamping the in determining thepercentage of soluble confilter paper against the top wall of thebowl7,5 stituents in material being tested to weigh the by means of the nut9. Dn the upperlend i material put in the extracting bowl both ofthecover 13 I have provided an annular before and after the centrifugingoperation, groove 1 1 in an enlarged hub-like portion 15;, thedifference in weight representing the A hole 16 ora series of holes-isthe passage 1 volatile matter present; I I r I for admitting liquidsfrom the grooved por- 80 It isthe object of my invention tojprovide tionto the interior of the bowl. The cover; im 'n'ovements inv the bowlsupport which will "is also provided with a series of small holes makevariations in weight, due to the solvent 17 which allow the air toescape from the bowl;

seeping into the workingparts of the appa when the'solvent is pouredintoiit fi to so construct the bottom of the bowl that ing 18 having alid '19 which fits overit and the filtrate willdrain away'morereadilythan which is clamped down by a bolt 20 and in existingapparatus. thumb nut 21. The casing 18 is, stationary e The above andother improvements to and rigidly connected to and mounted upon I 40which reference will be made during'the en a platform 18 supported onthe gear cassuing disclosure I accomplish by that certain ing 4. Theparticular assembly illustrated combination and arrangement-of parts ofalso has a hinge 22 which secures the casing which 1 have shown apreferred embodiment. cover to the casing. The bottom of'the In thedrawings c P casing has a rounded groove 23 sloping in Y Figure 1 is aside elevation of the censuch away that any filtrate which is ejectedtrifugalapparatus. 1 from-the bowl 1 0 intothe casingwill fiow Figure 2is a sectional. view of the bowl out through a p1pe24. The prov sion ofa taken along the lines indicated at 2-2 in casing w1th a sloplng bottomand an outlet Figure 1, the gearing being shown in full at a low pointis an improvement over eXlSi':

open as indicated at 25 so that the solvent may be poured directly into;the groove 1%.

The solvent drains down into the bowl, and it should be particularlynoted that during the discharge of the solvent into thebowl it is notexposed to any threaded connections which are asource of error incalculating percentages of 'eatrated material. v

Thefoperator then turns the handle 3 and the" bowl is rapidly rotated,causin the solvent tov be projected centrifugally through thefilterpaper, The filtrateis flung against the inner walls of the casingand 'drainsidown lililO the bottom of the casing, from which it drainsthrough the pipe 24.

Having thus described my invention, what Iclainras newand ,desire tosecure by Let- Patent, is': f

4 A centrifugal extractor compi rotatable shaft, a bowl, a cover foreacasing surrounding said bowl having a lid, a sleeve detachably mountedon said shaft, said sleeve and sl'iaft extending through said bojWlcover, said bovwl attached to and rotatable with said sleeve, said bowlcover having anextended hub having an annular groove therein with apassage extend- 111g from saidgroove to W thin said bowlfor r-iphery ofsaid sleeve. 7

centrifugal extractor comprising a rotatable shaft, 'QbowL a cover forsaidbowl,

means forclainping said cover on said bowl,

acasing surrounding said bowl having a lid,

a sleeve detachably mounted on said shaft,

said sleeve and shaft extending through said able withsaid sleeve, saidbowlcover having an extended hub having an annular groove thereinwith apassage extendingfrom said groove to within-said bowl for directing theflow of fluid to theouter periphery of said s va a an air vent in's aidcover.

A centrifugal extractor comprising a rotatable shaft, a bowl, a coverfor said bowl,

groove to within said bowlfor'directing the flow'of fluid toithe Outerperipheryof said said shaft.

directing the flow of fluid to the outer pe bowljcover, said bowlattached to and rotatmeans for clamping said cover on said bowl,

thereinfwith a passage extending from said sleeve, and said lid havingan opening directly over the annulargroove in said cover.

l. A centrifugal extractor comprising a rotatable shaft, a bowl, a coverfor said bowl, means for clamping said cover on said bowl, a casingsurrounding said bowl having a lid, a sleeve detachably mounted on saidshaft, said sleve and shaft extending through said bowl cover, saidbow-l attached to and rotatable with said sleeve, said bowl cover havingan extended hub having an annular groove therein with a, passageextending from said groove to within said bowl for directing the fiowof"fluid to the outer periphery of said sleeve',-and an air vent incoverzland said. lid having an ann ar opening directly over the groovein said cover.

, 5. A centrifugal extractor comprising a rotatable shaft, a bowl, acover for said bowl, means for clamping said cover on said bowl, acasing surrounding said, bowl having a lid, a sleeve detachably mountedon said shaft, said Sleeve-and shaft extending through said bowl cover,said bowl attached to and rotat able with said sleeve, said bowl coverhav 1 'anlen tended hub having an annular groove therein with a passageextending from said groove to ithin said bowl for directing the v I hflow of fluid to the outer periphery of said means for clamping saidcover onsa d bowl,

sleeve, said means for clamping said cover on said bowl comprising a nutthreaded on 6. A centrifugal extractor comprising a rotatable shaft abowl a cover for said bowl.

a casing surrounding said bowl, a lid on said casing, a sleevedetachably mounted on said shaft, said shaft and sleeve projectingthrough the cover an said bowl, means on saidsleeve for securing saidcover to said bowl said bowl attached to androtatable with said sleeve,said bowl cover having an e ded hub having an ann iilar groove thereinwith a passage extending to said groove to within said bowl fordirecting the flow of fluid to the outer periphery of said sleeve 7. Acentrifugal extractor comprising a rotatable shaft, a bowl, a cover forsaid bowl, a casing surrounding said bowl, a lid on d oasing, a sleevedetachably mounted on said shaft, said shafts and sleeve projectingthrou 'h the cover for said-bowl, means on said sleeve for securing saidcover to said bowl, said bowl attached to and rotatable with saidsleeve,said bowl cover having an extendedlhub having an annular groove thereinwith a passage extending to said groove to within said bowl fordirecting the flow offluid to the outer periphery of said sleeve, and anaperture in the casing lid above the annular groove in the hub.

' FRED RODLER.

